4 papers
Non-Collinear and Non-Coplanar Magnetic Orders in 1/1 Periodic Approximant to the Icosahedral Quasicrystal
Shinji Watanabe, Tatsuya Iwasaki
Ground-state properties of rare-earth based 1/1 periodic approximants of icosahedral quasicrystal are clarified theoretically on the basis of an effective model for magnetism takin…
Effect of magnetic field on whirling-anti-whirling order in icosahedral-quasicrystal approximant
Shinji Watanabe, Tatsuya Iwasaki
Recent neutron measurement in the icosahedral quasicrystal approximant Au-SM-Tb (SM=Al, Ga) has revealed unique noncollinear magnetic order ``whirling-anti-whirling states''. Here,…
Monte Carlo study on critical exponents of the classical Heisenberg model in ferromagnetic icosahedral quasicrystal
Shinji Watanabe, Tsunetomo Yamada, Hiroyuki Takakura +1
Quasicrystals (QCs) lack three-dimensional periodicity of atomic arrangement but possess long-range structural order, which are distinct from periodic crystals and random systems.…
Predicted versatile topological nodal magnons in Tb-based icosahedral quasicrystal 1/1 approximants
Rintaro Eto, Masahito Mochizuki, Shinji Watanabe
Using a recently-established band representation analysis, we discover two distinct types of topological nodal magnons in the real-space antiferroic ordering of whirling spin arran…